City ward maps of Kansas City, Missouri (1884, 1888, and 1890) and St. Louis, Missouri (1859, 1870, 1882, and 1891) are on Family History Library film 1377700; fiche 6016664-6 (Kansas City), fiche 6016759-62 (St. Louis). These can help you determine the ward of residence for census searches.

Large collections of maps and atlases are available at the University of Missouri, St. Louis Public Library, and St. Louis University. A helpful guide is Paul D. Selby, Bibliography of Missouri County Histories and Atlases, 2d ed. (Kirksville, Missouri: Northeast Missouri State Teachers College, 1966; Family History Library book 977.8 A1 No. 145).

St. Louis Public Library owns a large collection of Missouri maps and atlases, some of which are housed in the Map Room, and some in the History & Genealogy Department: